I've spend hours searching for this info...and I have a 2003 1MB #12576106 pcm I want to flash to the 2003 express van (so it will work on Drive by Cable). I am converting a 440 BB Mopar to be controlled by a LS1 fuel injection/pcm.

I have found 2004 express Van pinouts...but that isn't even the same model pcm...and I'm not sure if that ones still DBC and I don't think this PCM can be flashed to that as 2004 has a different PCM.

Any help is greatly appreciated....

 

the 2004 express Van is still drive by cable

 

Thanks...anyone know if it has the same pinouts? Or, can I flash my pcm to the 2004 express van even though is a different model pcm?

http://www.gmhightechperformance.com...ms/page_3.html

This article says, "The service codes for '03-'07 include 12576106, 12586243, 12586242, 12583560, 12583561, and 12589463. These PCMs are interchangeable, with a complete re-flash of the appropriate operating system. Thanks to its fast processor and large memory, this PCM is considered the optimal choice for LS1 transplants."

So, does that mean I can flash my 12576106 pcm (mine has IAC drivers built in) to any file that those pcm's had oem?

 

Sounds like a very interesting project. I for one would like to know how it turns out. If you will try www.lt1swap.com and do some reading, I think you will find answers to your problems. Ron

 

I've been all over that site the last week or so...and there is a lot of great info. I reread it all again today and still can't find the answers though. But thanks for the link...

 

hi all, does anybody have the PCM/ECU/ECM pinout for the 1999 GMC Yukon Denali V8?